But that's still a sizeable number of banks without services that many customers consider essential, such as the ability to check account balances by smartphone.
Most banking apps allow customers to check account balances, review transactions, transfer funds from one account to another within the bank and pay bills within the bank or externally.
With the wearable compatibility, users can check account balances and recent transaction histories of their checking, investments, savings and credit card accounts with just a flick of the wrist.